Regioselective, five-fold B-H activation of the monocarborane cluster [CB11H12]- at the positions B7-11 has been accomplished. Selective substitution of these positions by B-H activation has not been reported before. Our… Click to show full abstract
Regioselective, five-fold B-H activation of the monocarborane cluster [CB11H12]- at the positions B7-11 has been accomplished. Selective substitution of these positions by B-H activation has not been reported before. Our protocol involves directing group assistance by the carboxylic acid functionality and is based on palladium catalysis using iodoarene coupling partners. Penta-arylated products are obtained in a single step with yields ranging from 42% to 89% and with good functional group tolerance. X-Ray crystal structures for five new compounds confirm the selective substitution of the lower belt of the monocarborane cage.
Journal Title: Chemical communications
Year Published: 2022
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